Comtech EF Data CRS-180 - Manual (Page 30)

CRS-180 70/140 MHz IF 1:1 Redundancy Switch MN/CRS180.IOM
Introduction Revision 11
1–10
Figure 1-7. CDM-625/A 1:1 IP Redundancy Router Mode – Switchover (‘B’ Online)
1.3.1.1.3 CDM-570/A (with optional IP Module or Packet Processor)
Managed Switch or Router Modes
• Do not use the M&C Ethernet port (bottom RJ-45 connector) when the optional
IP Module (CDM-570) or IP Packet Processor (CDM-570A) is installed.
• When using the modem Commmand Line Interface (C LI) it is important to
remember that all configuration changes can only be made to the Online
Modem. Make sure to press ‘S’ to “Save Parameters to permanent
storage
” any time you make a change to a configuration page, to ensure the
configuration change is also applied to the Backup Modem.
Managed Switch (Ethernet Bridge) Mode: For the CDM-570/A in Managed Switch Mode (also
known as “Ethernet Bridge Mode”) you MUST use an external Ethernet hub to insure that traffic
will continue after a switchover. If an Ethernet switch is used, there could be a several minute
outage while the Ethernet switch “re-learns” the correct output Ethernet port. Using a “dumb”